Elephant Nose Fish Care Guide - Aquarium Setup, Diet & Breeding

The Elephant Nose Fish is an unusual freshwater species with a long, trunk-like lower jaw that it uses to search for food. Its dark brown to black body is marked with pale bands and subtle patterning, while the small dorsal and anal fins create an elegant, streamlined outline. Despite its common name, it is not related to the true elephant fish of marine aquariums.

This species belongs to the mormyrid family, a group of African fishes capable of producing and detecting weak electrical signals. These signals help the fish navigate, communicate and locate prey in murky water. Its elongated snout is highly sensitive and acts as a specialised probe for exploring the surroundings.

Elephant Nose Fish are generally peaceful but can be secretive, especially during daylight hours. They become more active after dark and may spend much of their time investigating the substrate, using their sensory organs to find small organisms hidden among debris and sediment.

In the wild, they are associated with shaded, structurally complex waterways and usually avoid bright, exposed conditions. Their distinctive appearance, intelligence and unusual sensory biology have made them one of the most memorable African freshwater fish kept by experienced aquarists.

Elephant Nose Fish are native to tropical West and Central Africa, where they occur in river systems including parts of the Niger, Ogun, Chari and Congo basins. They inhabit slow-moving rivers, backwaters and forested waterways with soft, often cloudy or tannin-stained water.

A single adult Elephant Nose Fish should have at least 300 litres, with a tank measuring around 150 cm long by 50 cm wide or larger preferred. A spacious footprint is more important than height, as this species spends much of its time exploring the lower levels. Use a soft sand substrate that will not damage its sensitive snout, along with driftwood, smooth stones, caves and dense areas of hardy plants to create shaded retreats. Leave open areas for foraging, provide subdued lighting and use a secure cover. Stable, well-filtered water and minimal electrical interference from equipment are desirable.

Up to 35 cm (14 in) in total length, although many aquarium specimens remain closer to 20–25 cm (8–10 in). There is no consistently documented, easily visible size difference between the sexes.

Elephant Nose Fish are carnivorous insectivores that feed on small aquatic invertebrates, insect larvae, worms and crustaceans. Offer a varied diet of frozen or live bloodworms, blackworms, daphnia, brine shrimp, tubifex and similar meaty foods, supplemented with a high-quality sinking carnivore pellet. Their specialised snout and nocturnal habits make sinking foods particularly suitable, and feeding after the aquarium lights dim often allows them to eat without competition.

Suitable tankmates include peaceful, similarly sized African tetras, Congo Tetras, peaceful barbs, medium-sized peaceful characins, peaceful Synodontis catfish and other calm bottom-dwelling species. Avoid fin-nippers, highly aggressive cichlids, boisterous feeders and very small fish that may be viewed as prey. Elephant Nose Fish can be territorial towards one another, particularly in cramped aquariums, so keeping several requires a very large, carefully structured setup with plenty of hiding places.

Breeding Elephant Nose Fish in home aquariums is exceptionally rare, and reliable captive-breeding methods are not well established. Successful spawning appears to depend on a spacious, mature aquarium, excellent water quality, abundant live or frozen food, suitable compatibility and natural seasonal cues. They are egg layers, but regular aquarium spawning should not be expected.

Males and females are extremely difficult to distinguish by appearance. They generally show no dependable external differences in body shape or colour, and the electrical characteristics sometimes used by specialists are not practical for routine identification in the home aquarium.